JP6858077B2 - Controller adjustment system and adjustment method - Google Patents

Description

The present invention relates to a controller adjustment system and adjustment method in a multi-input / output control system in which interference occurs between control loops.

Conventionally, when a work is processed by a heating device, the inside of the heating device is divided into a plurality of heating zones and the temperature is controlled for each heating zone. For example, when targeting a flat work such as a laminated coating film, it is necessary to provide a plurality of heating zones according to the size of the work, but state quantity interference such as temperature interference occurs in adjacent heating zones. Therefore, it is difficult to make the surface temperature of the work uniform. However, in the case of a laminated coating film, there is a problem that the quality of the film deteriorates if there is uneven temperature.

As a method of making the surface temperature of the work uniform, as shown in FIG. 15, an electric heating unit 101 composed of a plurality of electric heating bodies (heaters, Pelche elements, etc.) 100-1 to 100-9 for heating the work, and an electric heating unit 101. High-precision temperature sensors 104-1 to 104 in each region of the work surface corresponding to zones Z1 to Z9 heated by the electric heaters 100-1 to 100-9, respectively, in a heating device provided with a controller 102 for controlling the above. A heating test is performed using a work with a temperature sensor (hereinafter referred to as a work sensor) 103 provided with −9, the work surface temperature of each zone Z1 to Z9 is measured, and the control amount of the controller 102 is offset based on the measurement result. (Refer to Patent Document 1), a method of making the surface temperature of the work uniform by giving is conceivable.

In the process of adjusting the offset of the controller, it is necessary to derive the degree of interference between zones. However, the temperature control device disclosed in Patent Document 1 does not disclose a method for deriving the degree of interference between zones, and there is a problem that a controller adjustment method for making the surface temperature of the work uniform cannot be realized. There was a point.
It should be noted that the above problems occur not only in the heating device but also in the cooling device.

Japanese Unexamined Patent Publication No. 4-59371

The present invention has been made to solve the above problems, and it is possible to determine the interference strength between zones, and to make the surface temperature of the work uniform during the actual operation of the heating device or the actual operation of the cooling device. It is an object of the present invention to provide a possible controller adjustment system and adjustment method.

The controller adjustment system of the present invention is a heating device composed of an electric heating unit having a heating unit in each of a plurality of zones for heating the work and a controller for controlling the electric heating unit for each zone, or a plurality of heating devices for cooling the work. For a cooling device composed of an electric heating unit having a cooling unit in each of the zones and a controller for controlling the electric heating unit for each zone, a temperature sensor for each zone on the surface of the work when adjusting the offset of the controller. A target value setting unit configured to instruct the controller to set the target values of all zones to the same value in a fixed state, and one first zone in each zone. A temporary offset setting unit configured to perform a process of instructing the controller to add a temporary offset specified in advance to the control amount of the above for all zones while changing the first zone, and the temporary. The operation amount output from the controller when the temperature control is set for the second zone other than the first zone after the offset is applied, and the operation amount output from the controller when the temperature control is set for the second zone before the temporary offset is applied. The interference strength configured to calculate the strength of the interference that the first zone gives to the second zone for each of the first zone and each second zone based on the operation amount output from the controller. The process of calculating the offset of the target zone based on the measured value at the time of setting and the target value of the measuring unit and the temperature sensor located at the position corresponding to the target zone of the offset adjustment is performed on the zone having a large interference intensity. An offset calculation unit configured to perform all zones in order from, and an offset configured to instruct the controller to add the offset calculated by the offset calculation unit to the control amount of the target zone. It is characterized by including a setting unit, a determination unit configured to repeatedly execute the processing of the offset calculation unit and the offset setting unit until a predetermined offset adjustment end condition is satisfied.

Further, the controller adjustment system of the present invention cools a heating device or a work composed of an electric heating unit having a heating unit in each of a plurality of zones for heating the work and a controller for controlling the electric heating unit for each zone. For a cooling device composed of an electric heating unit having a cooling unit in each of a plurality of zones and a controller for controlling the electric heating unit for each zone, when adjusting the offset of the controller, each zone is on the surface of the work. With the temperature sensor fixed, the target value setting unit configured to instruct the controller to set the target values of all zones to the same value, and the operation amount output by the controller are set. The operation amount setting unit configured to do so, and the operation amount of one first zone is larger than the first value in the state where the operation amount of each zone is set to the first value. Operation of one first zone when it is changed to a third value smaller than the second value after being changed to a value, or when the operation amount of each zone is set to the first value. Control of a second zone other than the first zone when the amount is changed to a fourth value smaller than the first value and then changed to a fifth value greater than the fourth value. Based on the width of the peak of the amount and the width of the peak of the controlled amount of the first zone, the intensity of the interference that the first zone gives to the second zone is determined by changing the first zone. Based on the interference strength measuring unit configured to calculate for each zone and each second zone, and the measured value at the time of setting and the target value of the temperature sensor located at the position corresponding to the target zone for offset adjustment. The process of calculating the offset of the target zone is calculated by the offset calculation unit configured to perform the process of calculating the offset of the target zone for all zones in order from the zone having the highest interference strength, and the control amount of the target zone by the offset calculation unit. The processing of the offset setting unit configured to instruct the controller to add the offset, and the processing of the offset calculation unit and the offset setting unit is repeatedly executed until a predetermined offset adjustment end condition is satisfied. The operation amount setting unit includes the configured determination unit, and after instructing the controller to set the operation amount of all the zones to the first value, the operation amount of the first zone is set. The second value and then the third value, or the fourth value and then the fifth value. It is characterized in that instructing the controller is performed for all zones while changing the first zone, and the setting of the operation amount is canceled for the first zone for which the calculation of the interference strength is completed. It is a thing.

Further, the controller adjustment system of the present invention cools a heating device or a work composed of an electric heating unit having a heating unit in each of a plurality of zones for heating the work and a controller for controlling the electric heating unit for each zone. For a cooling device composed of an electric heating unit having a cooling unit in each of a plurality of zones and a controller for controlling the electric heating unit for each zone, when adjusting the offset of the controller, each zone is on the surface of the work. With the temperature sensor fixed, the target value setting unit configured to instruct the controller to set the target values of all zones to the same value, and the operation amount output by the controller are set. The operation amount setting unit configured to do so, and the operation amount of one first zone is larger than the first value in the state where the operation amount of each zone is set to the first value. Operation of one first zone when it is changed to a third value smaller than the second value after being changed to a value, or when the operation amount of each zone is set to the first value. Corresponds to a second zone other than the first zone when the quantity is changed to a fourth value smaller than the first value and then changed to a fifth value larger than the fourth value. Based on the width of the peak of the measured value of the temperature sensor at the position and the width of the peak of the measured value of the temperature sensor at the position corresponding to the first zone, the first zone is the second zone. An interference intensity measuring unit configured to calculate the intensity of interference given to a zone for each first zone and each second zone while changing the first zone, and a position corresponding to the target zone for offset adjustment. The process of calculating the offset of the target zone based on the measured value at the time of setting of the temperature sensor and the target value in the above is performed for all the zones in order from the zone having the highest interference intensity. A predetermined offset adjustment end condition is satisfied with the calculation unit, the offset setting unit configured to instruct the controller to add the offset calculated by the offset calculation unit to the control amount of the target zone, and the predetermined offset adjustment end condition. The offset calculation unit and the determination unit configured to repeatedly execute the processing of the offset setting unit are provided, and the operation amount setting unit sets the operation amount of all zones to the first value. After instructing the controller, the operation amount of the first zone is set to the second value, and then the second value is set. Instructing the controller to set the value to 3 or to set the 4th value and then to the 5th value is performed for all the zones while changing the 1st zone. It is characterized in that the setting of the operation amount is canceled for the first zone for which the calculation of the interference strength is completed.

Further, in one configuration example of the controller adjustment system of the present invention, the interference strength measuring unit sets the operation amount output from the controller at the time of adjusting the temperature control for the second zone after the application of the temporary offset. When the operation amount output from the controller at the time of setting the temperature control for the second zone before applying the temporary offset is Bij and the temporary offset is S, the first zone gives to the second zone. It is characterized in that the intensity of interference is calculated by | (Aij-Bij) / S |.
Further, in one configuration example of the controller adjustment system of the present invention, the interference strength measuring unit has the operation amount of the first zone set to the first value while the operation amount of each zone is set to the first value. When the value is changed to the value of 2 and then changed to the third value, or when the operation amount of each zone is set to the first value, the operation amount of the first zone is the fourth value. When the peak width of the controlled amount in the second zone is Pij and the peak width of the controlled amount in the first zone is Pii when the value is changed to the fifth value after being changed to the value of The first zone is characterized in that the intensity of interference given to the second zone is calculated by Pij / Pii.
Further, in one configuration example of the controller adjustment system of the present invention, the interference strength measuring unit has the operation amount of the first zone set to the first value while the operation amount of each zone is set to the first value. When the value is changed to the value of 2 and then changed to the third value, or when the operation amount of each zone is set to the first value, the operation amount of the first zone is the fourth value. The width of the peak of the measured value of the temperature sensor at the position corresponding to the second zone when the value is changed to the fifth value after being changed to Pij, corresponds to the first zone. When the width of the peak of the measured value of the temperature sensor at the position is set to Pij, the intensity of interference given by the first zone to the second zone is calculated by Pij / Pii. ..

Further, in one configuration example of the controller adjustment system of the present invention, when the offset calculation unit adjusts the offset a plurality of times for each zone, the target is in a state where all the offsets up to the immediately preceding adjustment are maintained. It is characterized in that an offset further added to the control amount of the zone is calculated.
Further, in one configuration example of the controller adjustment system of the present invention, the determination unit is used when the difference between the measured values at the time of setting of the temperature sensor after performing the offset adjustment for each zone is within a predetermined range. , The present invention is characterized in that it is determined that the offset adjustment end condition is satisfied.
Further, in one configuration example of the controller adjustment system of the present invention, the determination unit determines that the offset adjustment end condition is satisfied when the number of executions of the offset adjustment in each zone reaches a predetermined number. It is characterized by.
Further, in one configuration example of the controller adjustment system of the present invention, the temporary offset setting unit simultaneously applies a plurality of pre-registered zones to the first zone when the temporary offset is applied to all the zones in order. When the offset calculation unit calculates the offset in order from the zone having the highest interference intensity, the offset calculation unit calculates the offset for each of the target zones by simultaneously setting the plurality of registered zones as the target zones. The offset setting unit is characterized in that the controller is instructed to simultaneously add the corresponding offsets calculated by the offset calculation units to the control amounts of the registered plurality of zones. Is.
Further, in one configuration example of the controller adjustment system of the present invention, when the operation amount setting unit sets the operation amount for all the zones in order, a plurality of pre-registered zones are simultaneously set to the first zone. When the offset calculation unit calculates the offset in order from the zone having the highest interference intensity, the offset calculation unit calculates the offset for each of the target zones by simultaneously setting the plurality of registered zones as the target zones. The offset setting unit is characterized in that the controller is instructed to simultaneously add the corresponding offsets calculated by the offset calculation units to the control amounts of the registered plurality of zones. Is.

Further, in one configuration example of the controller adjustment system of the present invention, the target value setting unit, the temporary offset setting unit, the interference strength measurement unit, the offset calculation unit, the offset setting unit, and the determination unit are registered in advance. Processing is performed for each of the plurality of target values, and the offset is adjusted based on a storage unit configured to store the offset for each zone and each target value and the offset stored in the storage unit. The offset setting unit is further provided with an interpolation unit configured to calculate the offset for each zone by linear interpolation for each zone and store the target value in the storage unit, and the offset setting unit is used during actual operation of the heating device. Alternatively, during the actual operation of the cooling device, the offset corresponding to the target value of the same value as the control amount of each zone is acquired from the storage unit and set in the controller for each zone. is there.
Further, in one configuration example of the controller adjustment system of the present invention, the target value setting unit, the operation amount setting unit, the interference strength measurement unit, the offset calculation unit, the offset setting unit, and the determination unit are registered in advance. Processing is performed for each of the plurality of target values, and the offset is adjusted based on a storage unit configured to store the offset for each zone and each target value and the offset stored in the storage unit. The offset setting unit is further provided with an interpolation unit configured to calculate the offset for each zone by linear interpolation for each zone and store the target value in the storage unit, and the offset setting unit is used during actual operation of the heating device. Alternatively, during the actual operation of the cooling device, the offset corresponding to the target value of the same value as the control amount of each zone is acquired from the storage unit and set in the controller for each zone. is there.

Further, the controller adjusting method of the present invention cools a heating device or a work composed of an electric heating unit having a heating unit in each of a plurality of zones for heating the work and a controller for controlling the electric heating unit for each zone. For a cooling device composed of an electric heating unit having a cooling unit in each of a plurality of zones and a controller for controlling the electric heating unit for each zone, when adjusting the offset of the controller, each zone is on the surface of the work. With the temperature sensor fixed, the first step instructing the controller to set the target values of all zones to the same value, and the control amount of one first zone in each zone. The second step of instructing the controller to add a temporary offset specified in advance to all the zones while changing the first zone, and the first step after applying the temporary offset. The operation amount output from the controller when the temperature control is set for the second zone other than the zone, and the operation amount output from the controller when the temperature control is set for the second zone before the temporary offset is applied. The third step of calculating the intensity of interference given by the first zone to the second zone for each first zone and each second zone based on the above, and the position corresponding to the target zone for offset adjustment. The fourth step of calculating the offset of the target zone based on the measured value at the time of setting of the temperature sensor and the target value in all the zones in order from the zone having the highest interference intensity. A fifth step instructing the controller to add the offset calculated by the fourth step to the control amount of the target zone, and the fourth step until a predetermined offset adjustment end condition is satisfied. It is characterized by including a sixth step of repeatedly executing the process of the fifth step.

Further, the controller adjusting method of the present invention cools a heating device or a work composed of an electric heating unit having a heating unit in each of a plurality of zones for heating the work and a controller for controlling the electric heating unit for each zone. For a cooling device composed of an electric heating unit having a cooling unit in each of a plurality of zones and a controller for controlling the electric heating unit for each zone, when adjusting the offset of the controller, each zone is on the surface of the work. With the temperature sensor fixed, the first step of instructing the controller to set the target values of all zones to the same value, and the second step of setting the operation amount output by the controller. And, after the operation amount of one first zone is changed to a second value larger than the first value while the operation amount of each zone is set to the first value, the second value. When the operation amount is changed to a third value smaller than the value, or when the operation amount of each zone is set to the first value, the operation amount of one first zone is smaller than the first value. The width of the peak of the control amount of the second zone other than the first zone when the value is changed to the fifth value larger than the fourth value after being changed to the fourth value, and the first value. Based on the width of the peak of the control amount of the zone, the intensity of the interference that the first zone gives to the second zone is changed for each first zone and each second zone while changing the first zone. The third step of calculation and the process of calculating the offset of the target zone based on the measured value at the time of setting of the temperature sensor at the position corresponding to the target zone of the offset adjustment and the target value of the interference are performed. A fourth step performed for all zones in descending order of intensity, and a fifth step instructing the controller to add the offset calculated by the fourth step to the control amount of the target zone. The second step includes the sixth step of repeatedly executing the processing of the fourth step and the fifth step until a predetermined offset adjustment end condition is satisfied, and the second step controls the operation amount of all zones. The step of instructing the controller to set the first value, and the operation amount of the first zone is set to the second value and then set to the third value, or the fourth value. Instruct the controller to set the value and then set the fifth value for all zones while changing the first zone. This step includes a step of canceling the operation amount setting for the first zone for which the calculation of the interference intensity has been completed.

Further, the controller adjusting method of the present invention cools a heating device or a work composed of an electric heating unit having a heating unit in each of a plurality of zones for heating the work and a controller for controlling the electric heating unit for each zone. For a cooling device composed of an electric heating unit having a cooling unit in each of a plurality of zones and a controller for controlling the electric heating unit for each zone, when adjusting the offset of the controller, each zone is on the surface of the work. With the temperature sensor fixed, the first step of instructing the controller to set the target values of all zones to the same value, and the second step of setting the operation amount output by the controller. And, after the operation amount of one first zone is changed to a second value larger than the first value while the operation amount of each zone is set to the first value, the second value. When the operation amount is changed to a third value smaller than the value, or when the operation amount of each zone is set to the first value, the operation amount of one first zone is smaller than the first value. The measured value of the temperature sensor at the position corresponding to the second zone other than the first zone when the value is changed to the fifth value larger than the fourth value after being changed to the fourth value. Based on the width of the peak and the width of the peak of the measured value of the temperature sensor at the position corresponding to the first zone, the intensity of interference that the first zone gives to the second zone is determined by the first. The third step of calculating for each of the first zone and the second zone while changing one zone, and the measured value and the target value at the time of setting of the temperature sensor at the position corresponding to the target zone of the offset adjustment. The process of calculating the offset of the target zone based on the above is calculated by the fourth step of performing the process of calculating the offset of the target zone for all the zones in order from the zone having the highest interference strength, and the fourth step of controlling the control amount of the target zone. A fifth step of instructing the controller to add an offset, and a sixth step of repeatedly executing the processes of the fourth step and the fifth step until a predetermined offset adjustment end condition is satisfied. Including the above, the second step includes a step of instructing the controller to set the operation amount of all the zones to the first value, and the operation amount of the first zone to be the second value. For the controller to set the value to the third value, or to the fourth value and then to the fifth value. The instruction is characterized by including a step of performing the instruction for all zones while changing the first zone, and a step of canceling the operation amount setting for the first zone for which the calculation of the interference strength has been completed. Is to be.

According to the present invention, with the target values of all zones set to the same value, a temporary offset is added to the control amount of the first zone, and an operation output from the controller for the second zone after the temporary offset is applied. Based on the amount and the manipulated variable output from the controller for the second zone before the temporary offset is applied, the strength of the interference that the first zone gives to the second zone is determined for each first zone and for the second zone. The process of calculating the offset of the target zone based on the measured value and the target value at the time of setting of the temperature sensor at the position corresponding to the target zone and setting it in the controller for each zone is the zone with high interference strength. By performing all the zones in order from the beginning, the interference strength between the zones can be obtained, and the surface temperature of the work can be made uniform during the actual operation of the heating device or the actual operation of the cooling device. Further, in the present invention, since the temporary offset of the controlled variable is added in the controlled state, the period until the interference strength is acquired can be shortened.

Further, in the present invention, in a state where the manipulated variable of each zone is set to the first value, the manipulated variable of the first zone is changed to a second value larger than the first value, and then the second value is used. A fourth value in which the manipulated variable in the first zone is smaller than the first value when changed to a third value less than the value, or when the manipulated variable in each zone is set to the first value. Based on the width of the control peak in the second zone and the width of the control peak in the first zone when changed to a fifth value that is greater than the fourth value after being changed to a value. The intensity of interference that the first zone gives to the second zone is calculated for each first zone and each second zone while changing the first zone, and the target values of all the zones are set to the same value. Then, the process of calculating the offset of the target zone based on the measured value and the target value of the temperature sensor at the position corresponding to the target zone at the time of setting and setting it in the controller is performed in order from the zone with the highest interference intensity. By performing this for each zone, the interference strength between the zones can be obtained, and the surface temperature of the work can be made uniform during the actual operation of the heating device or the actual operation of the cooling device. Further, in the present invention, the operation amount of the first zone is switched between the second value and the third value, and the control amount of the control amount is not waited until the control amount of the first and second zones is set. Since the interference strength is calculated, the period until the interference strength is acquired can be shortened.

Further, in the present invention, in a state where the manipulated variable of each zone is set to the first value, the manipulated variable of the first zone is changed to a second value larger than the first value, and then the second value is used. A fourth value in which the manipulated variable in the first zone is smaller than the first value when it is changed to a third value that is smaller than the value, or when the manipulated variable in each zone is set to the first value. Corresponds to the peak width and the first zone of the measured value of the temperature sensor at the position corresponding to the second zone when changed to the fifth value, which is larger than the fourth value after being changed to the value. Based on the width of the peak of the measured value of the temperature sensor at the position, the intensity of interference that the first zone gives to the second zone is changed for each first zone and each second zone while changing the first zone. The target value of all zones is set to the same value, and the offset of the target zone is calculated based on the measured value and the target value at the time of setting of the temperature sensor at the position corresponding to the target zone. By performing the processing set in the controller for all zones in order from the zone with the highest interference strength, the interference strength between zones can be obtained, and the surface of the work during the actual operation of the heating device or the cooling device. The temperature can be made uniform. Further, in the present invention, the manipulated variable of the first zone is switched between the second value and the third value, and the measurement value of the temperature sensor at the position corresponding to the first and second zones is not settled without waiting. In addition, since the interference strength is calculated from the amount of fluctuation of the measured value, the period until the acquisition of the interference strength can be shortened.

FIG. 1 is a block diagram showing a configuration of a controller adjustment system for a heating device according to a first embodiment of the present invention. FIG. 2 is a block diagram showing a configuration of a heating unit of an electric heating unit of the heating device according to the first embodiment of the present invention. FIG. 3 is a block diagram showing a configuration of an adjustment device of the controller adjustment system according to the first embodiment of the present invention. FIG. 4 is a flowchart illustrating the operation of the controller adjustment system according to the first embodiment of the present invention. FIG. 5 is a block diagram showing a configuration of a controller adjustment system for a heating device according to a second embodiment of the present invention. FIG. 6 is a block diagram showing a configuration of an adjustment device of the controller adjustment system according to the second embodiment of the present invention. FIG. 7 is a flowchart illustrating the operation of the controller adjustment system according to the second embodiment of the present invention. FIG. 8 is a diagram illustrating a measurement process of interference strength in the second embodiment of the present invention. FIG. 9 is a plan view showing another arrangement example of the zones of the heating device. FIG. 10 is a block diagram showing a configuration of a controller adjustment system for a heating device according to a third embodiment of the present invention. FIG. 11 is a block diagram showing a configuration of an adjustment device of the controller adjustment system according to the third embodiment of the present invention. FIG. 12 is a flowchart illustrating the operation of the controller adjustment system according to the third embodiment of the present invention. FIG. 13 is a diagram illustrating an interpolation process of the interpolation unit of the adjusting device according to the third embodiment of the present invention. FIG. 14 is a flowchart illustrating the operation of the controller adjustment system during actual operation of the heating device according to the third embodiment of the present invention. FIG. 15 is a diagram illustrating a method of adjusting the offset of the controller.

[First Example]
Hereinafter, examples of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a controller adjustment system for a heating device according to a first embodiment of the present invention. An electric heating unit 2 having heating units 1-1 to 1-9 for heating the work 14 and an electric heating unit 2 in each of n zones Z1 to Z9 (n is a natural number and n = 9 in this embodiment) are provided. The controller 3 that controls each heating unit 1-1 to 1-9 (each zone) constitutes a heating device.

The controller adjustment system is a work sensor 4 in which temperature sensors 5-1 to 5-9 are provided in each region of the work surface corresponding to zones Z1 to Z9, and measured values (workpieces) from temperature sensors 5-1 to 5-9. It is composed of a measuring device 6 that acquires a surface temperature measured value [° C.]) and an adjusting device 7 that adjusts the offset of the controller 3 based on the measurement result of the measuring device 6.

FIG. 2 is a block diagram showing the configuration of the heating unit 1-1 of the electric heating unit 2. The heating unit 1-1 includes an electric heating body 10 such as a heater and a Pelche element, and a power controller 11 such as a power regulator and a control relay that supplies electric power to the electric heating body 10 according to the amount of operation from the controller 3. It is composed of a temperature sensor 12 that detects the temperature [° C.] of the electric heating body 10. In the example of FIG. 2, only the configuration of the heating unit 1-1 is shown, but the configuration of the other heating units 1-2 to 1-9 is the same as that of the heating unit 1-1.

In the controller 3, the control amounts (temperatures) PV1 to PV9 measured by the temperature sensors 12 of the heating units 1-1 to 1-9 of the electric heating unit 2 coincide with the target values (temperature set values) SP1 to SP9, respectively. The operation amounts MV1 to MV9 are calculated. Each power controller 11 of the heating units 1-1 to 1-9 of the electric heating unit 2 supplies electric power corresponding to the operation amount MV1 to MV9 to the electric heating body 10 of the heating units 1-1 to 1-9, respectively. In the heating device of this embodiment, n = 9 control loops for controlling the control amounts PV1 to PV9 are formed. As a control calculation algorithm of the controller 3, for example, there is a PID. Since such a temperature control operation of the controller 3 is a well-known technique, detailed description thereof will be omitted.
The power controller 11 of each heating unit 1-1 to 1-9 may be provided inside the controller 3.

The work sensor 4 is provided with temperature sensors 5-1 to 5-9 for each zone Z1 to Z9 on the surface of the work 14. When the work 14 is, for example, a laminated coating film, as a method of fixing the temperature sensors 5-1 to 5-9 to the work 14, for example, sticking with tape is used. It goes without saying that the work sensor 4 is used when adjusting the controller 3, and the temperature sensors 5-1 to 5-9 are not provided on the work 14 during actual operation of the heating device.

FIG. 3 is a block diagram showing the configuration of the adjusting device 7. The adjusting device 7 includes a temporary offset setting unit 70, an interference strength measuring unit 71, an offset calculating unit 72, an offset setting unit 73, a determination unit 74, a target value setting unit 75, and a storage unit 76. To.
If the processing capacity of the controller 3 is sufficient, the adjusting device 7 may be provided inside the controller 3.

FIG. 4 is a flowchart illustrating the operation of the controller adjustment system of this embodiment. First, the target value setting unit 75 of the adjusting device 7 sets the target value SP [° C.] of all zones Z1 to Z9 to the same value, and causes the controller 3 to perform temperature control at a constant target value SP. (FIG. 4, step S100). At this time, it is desirable that the target value SP set in the controller 3 is a target value when the work 14 is heat-treated during the actual operation of the heating device.

Next, the temporary offset setting unit 70 and the interference intensity measuring unit 71 of the adjusting device 7 measure the intensity C of the temperature interference given to the other zones by each zone Z1 to Z9 of the heating device (FIGS. 4 steps S101 to S105). ). Specifically, the temporary offset setting unit 70 is in a situation where the control amounts (temperatures) PV1 to PV9 of each of the zones Z1 to Z9 are set, and the temporary offset setting unit 70 is one of the first zones Zi (i) in the zones Z1 to Z9. The controller 3 is instructed to add a temporary offset S [° C.] of a predetermined amount to the control amount PVi of (= 1 to n) (step S102 in FIG. 4).

In this case, for the first zone Zi, the controller 3 operates the manipulated variable MVi so that the value obtained by adding the temporary offset S to the controlled variable PVi measured by the temperature sensor 12 of the heating unit 1-i matches the target value SP. Is calculated. Further, the controller 3 targets the control amount PVj measured by the temperature sensor 12 of the heating unit 1-j for the second zone Zj (j = 1 to n, i ≠ j) other than the first zone Zi. The operation amount MVj is calculated so as to match the value SP.

The interference strength measuring unit 71 sets the manipulated variable MVj = Aij of the second zone Zj when the controlled variable PVj of the second zone Zj other than the first zone Zi is set by the temperature control after applying the temporary offset S. , The interference intensity Cij given by the first zone Zi to the second zone Zj based on the manipulated variable MVj = Bij of the second zone Zj when the control amount PVj was set before the application of the temporary offset S. Is calculated as the following equation (FIG. 4, step S103).
Cij = | (Aij-Bij) / S | ... (1)

The temporary offset setting unit 70 and the interference strength measuring unit 71 perform such an interference strength Cij measurement process with i = 1, that is, zone Z1 as the first zone Zi (FIGS. 4 steps S101 to S103). Then, after the end of this measurement, the temporary offset setting unit 70 determines whether or not the measurement process of the interference intensity Cij in which each zone Z1 to Z9 is set as the first zone Zi is completed (step S104 in FIG. 4).

In step S104, the temporary offset setting unit 70 sets i <n, that is, i = i + 1 when the measurement process of the interference intensity Cij in which each zone Z1 to Z9 is set as the first zone Zi is not completed (step 4 in FIG. 4). S105), the process returns to step S102, and the interference strength Cij is measured for the next first zone Zi.
At this time, the temporary offset setting unit 70 returns the temporary offset S added to the control amount PVi of this zone to 0 for the zone where the measurement process of the interference intensity Cij is completed.

In this way, in step S104, i = n, and the processes of steps S102 to S105 are repeatedly executed while changing the first zone Zi until the measurement process of the interference intensity Cij with each zone Z1 to Z9 as the first zone Zi is completed. To do. For example, in the measurement in which zone Z1 is set as the first zone Zi, eight interference intensities of C12, C13, C14, C15, C16, C17, C18, and C19 can be obtained. Further, in the measurement in which the zone Z2 is set as the first zone Zi, eight interference intensities of C21, C23, C24, C25, C26, C27, C28 and C29 can be obtained.

When i = n in step S103 and the measurement process of the interference intensity C in which each zone Z1 to Z9 is set as the first zone Zi is completed, the offset calculation unit 72 of the adjusting device 7 performs the interference measured by the interference intensity measurement unit 71. The zone having the highest intensity C is defined as the target zone Zk (k = 1 to n) for offset adjustment, and the offset Gk [° C.] to be added to the control amount PVk of the target zone Zk is calculated by the following equation (FIG. 4, step S106). ).
Gk = a × (Wk-SP) ・ ・ ・ (2)

In equation (2), a is a predetermined coefficient (a> 0) for accelerating asymptotic convergence, and Wk is a measured value at the time of setting of the temperature sensor 5-k of the work sensor 4 at a position corresponding to the target zone Zk. is there. The storage unit 76 of the adjustment device 7 stores the offset G calculated by the offset calculation unit 72 for each zone and each time the offset adjustment is performed.

The offset setting unit 73 of the adjusting device 7 instructs the controller 3 to add the offset Gk calculated by the offset calculation unit 72 to the control amount PVk of the target zone Zk (step S107 in FIG. 4).

In the offset adjustment by the offset calculation unit 72 and the offset setting unit 73 of this embodiment, when the offset adjustment is performed a plurality of times as described later, further offset is maintained while all the offset G up to the immediately preceding adjustment is maintained. Make adjustments. For example, in the case of the first offset adjustment, the offset setting unit 73 instructs the controller 3 to add the offset Gk calculated by the offset calculation unit 72 to the control amount PVk of the zone Zk as described above (step S107).

As a result, in the zone Zk, the value obtained by adding the offset Gk instructed from the offset setting unit 73 to the control amount PVk measured by the temperature sensor 12 of the heating unit 1-k matches the target value SP. The operation amount MVk is calculated as described above. Further, in the controller 3, the control amount PVm measured by the temperature sensor 12 of the heating unit 1-m matches the target value SP in the zone Zm (m = 1 to n) in which the first offset adjustment has not been completed yet. The operation amount MVm is calculated as described above.

In the case of the second and subsequent offset adjustments, the offset setting unit 73 acquires all the offset values of the zone Zk obtained by the offset adjustment up to the previous time from the storage unit 76 for the target zone Zk of the offset adjustment, and immediately before. Instructs the controller 3 to add the value obtained by adding the latest offset Gk calculated this time by the offset calculation unit 72 to the total offset of the zone Zk obtained by the offset adjustment up to, to the control amount PVk of the zone Zk. (Step S107).

As a result, in the zone Zk, the value obtained by adding the offset instructed from the offset setting unit 73 to the control amount PVk measured by the temperature sensor 12 of the heating unit 1-k matches the target value SP. The operation amount MVk is calculated. Further, the controller 3 sets an offset to the control amount PVm measured by the temperature sensor 12 of the heating unit 1-m by the offset adjustment immediately before, for the zone Zm (m = 1 to n) for which the offset adjustment has not been completed this time. The operation amount MVm is calculated so that the value to which the offset instructed from the unit 73 is added matches the target value SP.

The offset calculation unit 72 determines whether or not the offset adjustment processing has been completed for all the zones Z1 to Z9 (step S108 in FIG. 4). If the unprocessed zone remains, the offset calculation unit 72 returns to step S106, and adjusts the offset by setting the zone having the next largest interference intensity C as the target zone Zk.

In this way, the offset calculation unit 72 and the offset setting unit 73 adjust the offset of the controller 3 in order from the zone having the largest interference strength C. If the offset is adjusted for one zone, the measured value of the temperature sensor 5 in the other zone changes. Therefore, in order to adjust the offset for the zone having the next largest interference intensity C, the measured value of the temperature sensor 5 is set. You have to wait until you do.

After executing the offset adjustment of the controller 3 for all the zones Z1 to Z9 (YES in step S108), the determination unit 74 of the adjustment device 7 determines whether or not the offset adjustment end condition is satisfied (FIG. 4 step S109). ..
The offset adjustment end condition includes the required accuracy of the work sensor temperature and the number of offset adjustments.

Specifically, the determination unit 74 determines that the difference between the measured values of the temperature sensors 5-1 to 5-9 after the offset adjustment is set is within a predetermined range (for example, ± 0.1 ° C.). When it is determined that the required accuracy is realized and the offset adjustment end condition is satisfied, and at least one of the differences between the measured values of the temperature sensors 5-1 to 5-9 is out of the predetermined range, the offset is offset. It may be determined that the adjustment end condition is not satisfied. Alternatively, the determination unit 74 determines that the offset adjustment end condition is satisfied when the number of times the offset adjustment is executed reaches a predetermined number of times, and ends the offset adjustment when the number of times the offset adjustment is executed does not reach the predetermined number of times. It may be determined that the condition is not satisfied.

If the offset adjustment end condition is not satisfied (NO in step S109), the determination unit 74 returns to step S106 and causes the offset calculation unit 72 and the offset setting unit 73 to perform the offset adjustment of the controller 3 again.
In this way, by repeatedly executing the processes of steps S106 to S109 until the offset adjustment end condition is satisfied, the measured values of the temperature sensors 5-1 to 5-9 of the work sensor 4 can be asymptotically aligned.

As described above, in the offset adjustment by the offset calculation unit 72 and the offset setting unit 73 of this embodiment, when the offset adjustment is performed a plurality of times, the offset adjustment is further performed while maintaining all the offsets up to the immediately preceding adjustment. .. Therefore, for example, when the first offset of the zone Z1 is G1_1 and the second offset adjustment is performed, the second offset G1-2 of the zone Z1 is applied with the offset G1_1 added to the control amount PV1 of the zone Z1. When the third offset adjustment is performed, the third offset G1_3 of the zone Z1 is obtained with the offset G1-2 and the first offset G1_1 added to the control amount PV1 of the zone Z1. If the offset adjustment is executed three times and the offset adjustment end condition is satisfied, the final offset added to the control amount PV1 of the zone Z1 is G1_1 + G1_2 + G1_3.

When the offset adjustment end condition is satisfied (YES in step S109), the operation of the controller adjustment system ends. The offset value set in the controller 3 by the controller adjustment system is maintained as it is even during the actual operation of the heating device.

As described above, in this embodiment, the interference strength between the zones can be obtained, and the offset adjustment of the controller 3 capable of making the surface temperature of the work 14 uniform during the actual operation of the heating device can be realized.

Further, in this embodiment, since the temporary offset S of the controlled variable PV is added in the controlled state, the time until the controlled variable PV is set after the temporary offset S is added can be shortened. Therefore, in this embodiment, the period until the interference strength is acquired can be shortened.

[Second Example]
Next, a second embodiment of the present invention will be described. FIG. 5 is a block diagram showing a configuration of a controller adjustment system for a heating device according to a second embodiment of the present invention, and the same configurations as those in FIG. 1 are designated by the same reference numerals. The controller adjustment system of this embodiment includes a work sensor 4, a measuring instrument 6, and an adjustment device 7a.

FIG. 6 is a block diagram showing the configuration of the adjusting device 7a of this embodiment. The adjusting device 7a includes an interference strength measuring unit 71a, an offset calculating unit 72, an offset setting unit 73, a determination unit 74, a target value setting unit 75, a storage unit 76, and an operation amount setting unit 77. To.
Similar to the first embodiment, if the processing capacity of the controller 3 is sufficient, the adjusting device 7a may be provided inside the controller 3.

FIG. 7 is a flowchart illustrating the operation of the controller adjustment system of this embodiment. First, the target value setting unit 75 of the adjusting device 7a sets the target value SP [° C.] of all zones Z1 to Z9 to the same value, and causes the controller 3 to perform temperature control at a constant target value SP. (FIG. 7, step S200). At this time, it is desirable that the target value SP set in the controller 3 is a target value when the work 14 is heat-treated during the actual operation of the heating device.

Subsequently, the operation amount setting unit 77 of the adjusting device 7a sets the operation amounts MV1 to MV9 of all the zones Z1 to Z9 to the same value MVcom (first value), and outputs a constant operation amount MV1 to MV9. The controller 3 is instructed to perform temperature control (step S201 in FIG. 7). As a result, the manipulated variable output by the control calculation of the controller 3 according to the target value SP set in step S200 becomes invalid.

Next, the operation amount setting unit 77 and the interference strength measuring unit 71a of the adjusting device 7a measure the interference strength C given to the other zones by each zone Z1 to Z9 of the heating device (FIGS. 7 steps S202 to S208). Specifically, the operation amount setting unit 77 specifies in advance the operation amount MVi of one first zone Zi (i = 1 to n, n = 9 in this embodiment) in the zones Z1 to Z9. The controller 3 is instructed to set the second value to HIGH (step S203 in FIG. 7). Subsequently, the manipulated variable setting unit 77 sets the manipulated variable MVi of the first zone Zi to HIGH, and then at the timing when the controlled variable PVi of the first zone Zi rises and passes the first threshold value TH1 specified in advance. , The controller 3 is instructed to set the manipulated variable MVi of the first zone Zi to a predetermined third value LOW (LOW <HIGH) (step S204 in FIG. 7).

It should be noted that the manipulated variable MVi of the first zone Zi may be set to HIGH and then set to LOW after a predetermined time. The manipulated variable MVi = LOW is a value lower than the manipulated variable MVcom in other zones. The manipulated variable MVi = HIGH needs to be a value higher than the manipulated variable MVcom in other zones.

The interference strength measuring unit 71a has a second zone Zj (j = 1) other than the first zone Zi when the manipulated variable MVi of the first zone Zi is changed to MVi = HIGH and then changed to MVi = LOW. In ~ n, the peak rise width of the control quantity PVj of i ≠ j) (the rise width with respect to the control quantity PVj before being changed to MVi = HIGH) Pij and the manipulated variable MVi of the first zone Zi are MVi = HIGH. Based on the increase width of the peak of the control amount PVi of the first zone Zi (the increase width with respect to the control amount PVi before the change to MVi = HIGH) Pii when MVi = LOW is changed after being changed to , The interference intensity Cij given by the first zone Zi to the second zone Zj is calculated by the following equation (FIG. 7, step S205).
Cij = Pij / Pii ... (3)

Then, the operation amount setting unit 77 instructs the controller 3 to cancel the setting of the operation amount MVi for the first zone Zi for which the calculation of the interference intensity Cij has been completed (step S206 in FIG. 7). Specifically, the operation amount setting unit 77 operates the first zone Zi at the timing when the control amount PVi of the first zone Zi descends and passes the second threshold value TH2 (TH2 <TH1) specified in advance. Instruct the controller 3 to cancel the setting of the amount MVi. As a result, the manipulated variable MV of this zone becomes the manipulated variable based on the control calculation. That is, the controller 3 calculates the manipulated variable MV so that the controlled variable PV of the zone in which the manipulated variable MV is released matches the target value SP set in step S200.

The operation amount setting unit 77 and the interference intensity measuring unit 71a perform such an interference intensity Cij measurement process with i = 1, that is, zone Z1 as the first zone Zi (FIGS. 7 steps S202 to S206). Then, after the end of this measurement, the manipulated variable setting unit 77 determines whether or not the measurement process of the interference intensity Cij in which each zone Z1 to Z9 is set as the first zone Zi is completed (step S207 in FIG. 7).

In step S207, the operation amount setting unit 77 sets i <n, that is, i = i + 1 when the measurement process of the interference intensity Cij in which each zone Z1 to Z9 is set as the first zone Zi is not completed (step 7 of FIG. 7). S208), the process returns to step S203, and the interference strength Cij is measured for the next first zone Zi.

In this way, in step S207, i = n, and the processes of steps S203 to S206 are repeatedly executed while changing the first zone Zi until the measurement process of the interference intensity Cij in which each zone Z1 to Z9 is set as the first zone Zi is completed. To do. FIG. 8 is a diagram illustrating the above measurement process of the interference strength C. In the example of FIG. 8, the manipulated variable MVi of the first zone Zi is changed to MVi = HIGH at time t1, changed to MVi = LOW at time t2, and the manipulated variable MVi is canceled at time t3. ..

The temperature sensor 5-j of the work sensor 4 is located at a position corresponding to the second zone Zj when the manipulated variable MVi of the first zone Zi is changed to MVi = HIGH and then to MVi = LOW. The peak rise width of the measured value Wj (the rise width with respect to the measured value Wj before being changed to MVi = HIGH) is set to Pij, and after the manipulated variable MVi of the first zone Zi is changed to MVi = HIGH, MVi = The rising width of the peak of the measured value Wi of the temperature sensor 5-i of the work sensor 4 at the position corresponding to the first zone Zi when changed to LOW (measured value Wi before being changed to MVi = HIGH). The interference strength Cij of the equation (3) may be calculated by setting Pii as the rise width with respect to the above.

In step S207, i = n, and when the measurement process of the interference intensity C with each zone Z1 to Z9 as the first zone Zi is completed, all the states in which the operation amounts MV1 to MV9 of each zone Z1 to Z9 are fixed to MVcom. It will be released. As described above, the controller 3 sets the operation amounts MV1 to MV9 so that the control amounts PV1 to PV9 measured by the temperature sensors 12 of the heating units 1-1 to 1-9 of the electric heating unit 2 match the target value SP, respectively. calculate.

Since the offset adjustment processing in steps S209 to S212 of FIG. 7 is the same as the processing in steps S106 to S109 of the first embodiment, the description thereof will be omitted.
Thus, in this embodiment, the same effect as that of the first embodiment can be obtained. Further, the operation of switching the operation amount MVi of the first zone Zi by HIGH / LOW is the same as the auto-tuning operation of the controller 3 by the limit cycle method. Therefore, in this embodiment, since a general-purpose controller can be used, it is easy to construct a system, and this embodiment can be easily applied to a heating device using a general-purpose controller.

Further, in this embodiment, the manipulated variable MVi of the first zone Zi is switched by HIGH / LOW, and it is not waited until the controlled quantities PVi, PVj and the measured values Wi, Wj of the temperature sensors 5-i, 5-j are set. In addition, since the interference intensity is calculated from the control amounts PVi and PVj and the fluctuation amounts of the measured values Wi and Wj, the period until the interference intensity is acquired can be shortened.

In the first and second embodiments, when the zones Z1 to Z6 of the heating device are arranged in a plane as shown in FIG. 9, the zones Z2 to Z5 are arranged symmetrically with respect to the zones Z1 and Z6. Has been done. In this case, when the electric heating capacity of each of the electric heating bodies 10 of the heating units 1-1 to 1-5 of the zones Z1 to Z5 is the same, the strength of interference given by each of the zones Z1 to Z5 to the other zones is also the same. It is considered to be a degree.

Therefore, the temporary offset setting unit 70 of the first embodiment sets the temporary offset S applied to the control quantities PV1 to PV5 of the zones Z1 to Z5 to the same value, sets the zones Z1 to Z5 as the first zone, and sets the zones Z1 to Z5 as the first zone, and in step S102. The processing may be performed for zones Z1 to Z5 at once. As described in the first embodiment, the interference strength measuring unit 71 calculates the interference strength C for each of the first zone and each of the second zones, but the zones Z1 to Z5 are first in the process of one step S103. It is possible to calculate the interference intensity C when the zone is set to.

The temporary offset setting unit 70, the interference strength measurement unit 71, the offset calculation unit 72, and the offset setting unit 73 may be registered in advance with the numbers of zones Z1 to Z5 at which processing is performed at the same time. The offset calculation unit 72 and the offset setting unit 73 perform the processes of steps S106 and S107 in order from the zone having the largest interference intensity C, and any one of the pre-registered zones Z1 to Z5 becomes the target zone for offset adjustment. At that point, the processes of steps S106 and S107 may be performed at once for zones Z1 to Z5. In this way, the processing time required for calculating the interference strength and adjusting the offset can be shortened.

Further, the manipulated variable setting unit 77 of the second embodiment may set the zones Z1 to Z5 as the first zone and perform the processes of steps S203 to S206 at once for the zones Z1 to Z5. In this case, since it is necessary to align the timing of switching the operation amounts MV1 to MV5 of the zones Z1 to Z5 to HIGH / LOW, the operation amounts MV1 to MV5 of the zones Z1 to Z5 may be set to HIGH and then set to LOW after a predetermined time. .. Further, after the operation amounts MV1 to MV5 of the zones Z1 to Z5 are set to HIGH, the zones Z1 to Z5 are at the timing when any one of the control amounts PV1 to PV5 of the zones Z1 to Z5 passes above the first threshold value TH1. The operation amounts MV1 to MV5 may be set to LOW. As described in the second embodiment, the interference strength measuring unit 71a calculates the interference strength C for each of the first zone and each of the second zones, but the zones Z1 to Z5 are first in the process of step S205 once. It is possible to calculate the interference intensity C when the zone is set to. Then, the operation amount setting unit 77 sets the operation amounts MV1 to MV5 for the zones Z1 to Z5 at the timing when any one of the control amounts PV1 to PV5 of the zones Z1 to Z5 descends and passes through the second threshold value TH2. It may be released (step S206).

In the operation amount setting unit 77, the interference strength measurement unit 71a, the offset calculation unit 72, and the offset setting unit 73, the numbers of zones Z1 to Z5 at which processing is performed at the same time may be registered in advance. The offset calculation unit 72 and the offset setting unit 73 perform the processes of steps S209 and S210 in order from the zone having the largest interference intensity C, and any one of the pre-registered zones Z1 to Z5 becomes the target zone for offset adjustment. At that point, the processes of steps S209 and S210 may be performed for zones Z1 to Z5 at once. In this way, the processing time required for calculating the interference strength and adjusting the offset can be shortened.

[Third Example]
Next, a third embodiment of the present invention will be described. In the first and second embodiments, the case where the target value SP is one value and the result of the offset adjustment is reflected as it is in the actual operation of the heating device has been described. However, in the heating device, the heat treatment of the work 14 is performed. Since the target value SP may be changed during the process, it is preferable to be able to adjust the offset for each of the plurality of target value SPs. However, if the offset is adjusted for each of the plurality of target value SPs, there is a problem that the offset adjustment takes time. Therefore, an example of shortening the processing time in such a case will be described.

FIG. 10 is a block diagram showing a configuration of a controller adjustment system for the heating device according to the present embodiment, and the same configurations as those in FIG. 1 are designated by the same reference numerals. The controller adjustment system of this embodiment includes a work sensor 4, a measuring instrument 6, and an adjustment device 7b.

FIG. 11 is a block diagram showing the configuration of the adjusting device 7b of this embodiment. The adjusting device 7b includes a temporary offset setting unit 70, an interference strength measuring unit 71, an offset calculation unit 72, an offset setting unit 73b, a determination unit 74, a target value setting unit 75, a storage unit 76b, and an interpolation unit. It is composed of 78.

FIG. 12 is a flowchart illustrating the operation of the controller adjustment system of this embodiment. First, the offset adjustment process in step S300 of FIG. 12 is the same as the process described in FIG. 4 of the first embodiment. The target value setting unit 75 of the adjusting device 7b sequentially sets a plurality of target value SPs registered in advance, so that the process of FIG. 4 (step S300) is performed for each target value SP.

Similar to the storage unit 76 of the first embodiment, the storage unit 76b of the adjustment device 7b of the present embodiment stores the offset G calculated by the offset calculation unit 72 for each zone and each time the offset adjustment is performed. However, in this embodiment, since the offset is adjusted for each target value SP, it is necessary to store the offset for each target value SP. That is, the storage unit 76b stores the offset G calculated by the offset calculation unit 72 for each zone, each time the offset adjustment is performed, and each target value SP.

In addition to the functions of the offset setting unit 73 described in the first embodiment, the offset setting unit 73b of the adjusting device 7b of the present embodiment sets the offset G according to the target value SP to the controller 3 during the actual operation of the heating device. It has a function to set.

After the offset adjustment process of step S300 is completed for the plurality of target value SPs registered in advance (YES in step S301 of FIG. 12), the interpolation unit 78 of the adjustment device 7b is based on the offset G stored in the storage unit 76b. In addition, the offset G is calculated for each zone by linear interpolation for the target value SP for which the offset adjustment has not been performed (step S302 in FIG. 12).

FIG. 13 is a diagram illustrating the interpolation process of the interpolation unit 78. For example, as a result of offset adjustment for two points of the target value SP = 90 ° C. and 150 ° C. registered in advance, when the target value SP = 90 ° C., the total offset G = G_90 of a certain zone and the target value SP = It is assumed that the total offset G = G_150 of the same zone is obtained at 150 ° C. The interpolation unit 78 obtains the offset G_120 when SP = 120 ° C. by linear interpolation when SP = 120 ° C. is used in addition to the target values SP of 90 ° C. and 150 ° C. during the actual operation of the heating device. Such interpolation processing may be performed for each zone and each time the offset adjustment is performed. The target value SP for which the offset should be derived in the interpolation process may be set in advance in the interpolation unit 78.

The storage unit 76b stores the interpolation result of the interpolation unit 78 for each zone, each time the offset adjustment is performed, and each target value SP. In this embodiment, in order to perform the interpolation processing, it is necessary to perform the offset adjustment processing in step S300 at two or more target value SPs.

During the actual operation of the heating device, the offset setting unit 73b of the adjusting device 7b acquires all the offset G corresponding to the target value SP having the same value as the control amount PV of each zone from the storage unit 76b. Then, the offset setting unit 73b instructs the controller 3 to add the total offset G of the zone to be set to the control amount PV of the zone for each zone (step S400 in FIG. 14).

In this way, the process of FIG. 14 is performed until the temperature control by the controller 3 is completed (YES in step S401 of FIG. 14).
According to this embodiment, it is possible to adjust the offset of the control amount PV that changes during control every moment, and it is possible to control the temperature of the work 14 with high accuracy, and a plurality of control amount PV (target value SP). ), The processing time required for offset adjustment can be shortened.

In the above description, the case where this embodiment is applied to the first embodiment is described, but it may be applied to the second embodiment. When applied to the second embodiment, the offset setting unit 73b, the storage unit 76b, and the interpolation unit 78 may be provided in the adjusting device 7 of the second embodiment. In this case, the offset adjustment process in step S300 of FIG. 12 is the same as the process described in FIG. 7 of the second embodiment. The target value setting unit 75 sequentially sets a plurality of target value SPs registered in advance, so that the process of FIG. 7 (step S300) is performed for each target value SP.

In the first to third embodiments, a case of applying to a heating device is described, but an electric heating unit having a cooling unit in each of a plurality of zones for cooling the work and the electric heating unit are controlled for each zone. The first to third embodiments may be applied to the cooling device including the controller.

When the first to third embodiments are applied to the cooling device, the heating units 1-1 to 1-9 for each zone Z1 to Z9 of the electric heating unit 2 are replaced with cooling units for each zone Z1 to Z9. For example, the description of the electric heating unit 2 of the first to third embodiments can be applied to the electric heating unit of the cooling device. As the configuration of each cooling unit, for example, a Peltier element or the like may be used as the electric heating body 10 shown in FIG.

When the second embodiment is applied to the cooling device, the operation amount setting unit 77 instructs the controller 3 to set the operation amount MVi of the first zone Zi to the fourth value LOW (step 7). (Corresponding to S203), after the manipulated variable MVi is set to LOW, the manipulated variable MVi of the first zone Zi is set at the timing when the controlled variable PVi of the first zone Zi descends and passes the third threshold value TH3 specified in advance. The controller 3 may be instructed to set the fifth value HIGH (corresponding to step S204 in FIG. 7). When a plurality of zones Z1 to Z5 registered in advance as described above are set as the first zone at the same time, the operation amounts MV1 to MV5 of the zones Z1 to Z5 are set to LOW, and then the control amount PV1 of the zones Z1 to Z5 is set. At the timing when any one of ~ PV5 passes down the third threshold value TH3, the manipulated variables MV1 to MV5 in zones Z1 to Z5 may be set to HIGH. Further, the manipulated variable MVi of the first zone Zi may be set to LOW and then set to HIGH after a predetermined time.

When the second embodiment is applied to the cooling device, the interference strength measuring unit 71a is the second when the manipulated variable MVi of the first zone Zi is changed to MVi = HIGH after being changed to MVi = LOW. The descending width of the peak of the controlled variable PVj in zone Zj (the descending width with respect to the controlled variable PVj before being changed to MVi = LOW) is Pij, and the manipulated variable MVi in the first zone Zi is changed to MVi = LOW and then MVi. The interference strength of the equation (3) is set to Pii, where the descending width of the peak of the controlled variable PVi in the first zone Zi when changed to = HIGH (the descending width with respect to the controlled variable PVi before being changed to MVi = LOW) is Pii. Cij may be calculated (corresponding to step S205 in FIG. 7).

Further, when the second embodiment is applied to the cooling device, the interference strength measuring unit 71a is the first when the manipulated variable MVi of the first zone Zi is changed to MVi = HIGH after being changed to MVi = LOW. The descending width of the peak of the measured value Wj of the temperature sensor 5-j of the work sensor 4 at the position corresponding to the zone Zj of 2 (the descending width with respect to the measured value Wj before being changed to MVi = LOW) is defined as Pij. Measurement of the temperature sensor 5-i of the work sensor 4 at a position corresponding to the first zone Zi when the manipulated variable MVi of the first zone Zi is changed to MVi = LOW and then to MVi = HIGH. The interference intensity Cij of the equation (3) may be calculated by setting the descending width of the peak of the value Wi (the descending width with respect to the measured value Wi before being changed to MVi = LOW) as Pii.

Then, when the second embodiment is applied to the cooling device, the manipulated variable setting unit 77 has passed the controlled variable PVi of the first zone Zi ascending through the predetermined fourth threshold value TH4 (TH3 <TH4). At the timing, the controller 3 may be instructed to cancel the setting of the operation amount MVi for the first zone Zi (corresponding to step 206 in FIG. 7). When a plurality of zones Z1 to Z5 registered in advance as described above are set as the first zone at the same time, any one of the control amounts PV1 to PV5 of the zones Z1 to Z5 passes through the fourth threshold value TH4. The setting of the operation amounts MV1 to MV5 may be canceled for the zones Z1 to Z5 at the same timing. Other configurations are the same as when applied to a heating device.

The adjusting devices 7, 7a, 7b described in the first to third embodiments are realized by a computer provided with a CPU (Central Processing Unit), a storage device, and an interface, and a program for controlling these hardware resources. Can be done. In such a computer, a program for realizing the adjustment method of the present invention is provided in a state of being recorded on a recording medium such as a flexible disk, a CD-ROM, a DVD-ROM, or a memory card, and is stored in a storage device. To. The CPU executes the processes described in the first to third embodiments according to the program stored in the storage device.

The present invention can be applied to a technique for adjusting a controller in a multi-input / output control system.

1-1-1-9 ... Heating unit, 2 ... Electric heating unit, 3 ... Controller, 4 ... Work sensor, 5-1 to 5-9, 12 ... Temperature sensor, 6 ... Measuring instrument, 7, 7a, 7b ... Adjustment Device, 10 ... Electric heater, 11 ... Power controller, 14 ... Work, 70 ... Temporary offset setting unit, 71, 71a ... Interference strength measurement unit, 72 ... Offset calculation unit, 73, 73b ... Offset setting unit, 74 ... Judgment Unit, 75 ... target value setting unit, 76, 76b ... storage unit, 77 ... operation amount setting unit, 78 ... interpolation unit.

Claims (16)

A heating device consisting of an electric heating unit having a heating unit in each of a plurality of zones for heating the work and a controller for controlling the electric heating unit for each zone, or a cooling unit in each of the plurality of zones for cooling the work. For a cooling device consisting of an electric heating unit provided and a controller that controls this electric heating unit for each zone, all with the temperature sensor fixed for each zone on the surface of the work when adjusting the offset of the controller. A target value setting unit configured to instruct the controller to set the target value of the zone to the same value, and
The process of instructing the controller to add a predetermined temporary offset to the control amount of one first zone in each zone is performed for all zones while changing the first zone. The configured temporary offset setting unit and
The manipulated variable output from the controller when the temperature control is set for the second zone other than the first zone after the application of the temporary offset, and the temperature control for the second zone before the temporary offset is applied. It is configured to calculate the intensity of interference that the first zone gives to the second zone for each first zone and each second zone based on the amount of operation sometimes output from the controller. Interference strength measuring unit and
The process of calculating the offset of the target zone based on the measured value at the time of setting of the temperature sensor at the position corresponding to the target zone of the offset adjustment and the target value is performed in order from the zone having the highest interference strength. An offset calculator configured to do for the zone,
An offset setting unit configured to instruct the controller to add an offset calculated by the offset calculation unit to the control amount of the target zone.
A controller adjustment system including a determination unit configured to repeatedly execute the processing of the offset calculation unit and the offset setting unit until a predetermined offset adjustment end condition is satisfied. A heating device consisting of an electric heating unit having a heating unit in each of a plurality of zones for heating the work and a controller for controlling the electric heating unit for each zone, or a cooling unit in each of the plurality of zones for cooling the work. For a cooling device consisting of an electric heating unit provided and a controller that controls this electric heating unit for each zone, all with the temperature sensor fixed for each zone on the surface of the work when adjusting the offset of the controller. A target value setting unit configured to instruct the controller to set the target value of the zone to the same value, and
An operation amount setting unit configured to set the operation amount output by the controller, and an operation amount setting unit.
From the second value after the operation amount of one first zone is changed to a second value larger than the first value while the operation amount of each zone is set to the first value. When the third value is changed to a smaller value, or when the operation amount of each zone is set to the first value, the operation amount of one first zone is smaller than the first value. The width of the peak of the control amount of the second zone other than the first zone and the width of the control amount of the first zone when the value is changed to the fifth value larger than the fourth value after being changed to the value of Based on the width of the peak of the controlled variable, the intensity of interference given by the first zone to the second zone is calculated for each first zone and each second zone while changing the first zone. Interference strength measuring unit configured as
The process of calculating the offset of the target zone based on the measured value at the time of setting of the temperature sensor at the position corresponding to the target zone of the offset adjustment and the target value is performed in order from the zone having the highest interference strength. An offset calculator configured to do for the zone,
An offset setting unit configured to instruct the controller to add an offset calculated by the offset calculation unit to the control amount of the target zone.
The offset calculation unit and the determination unit configured to repeatedly execute the processing of the offset setting unit are provided until a predetermined offset adjustment end condition is satisfied.
The operation amount setting unit instructs the controller to set the operation amount of all the zones to the first value, and then sets the operation amount of the first zone to the second value, and then sets the operation amount to the second value. Instructing the controller to set the third value or to set the fourth value and then set the fifth value is performed for all the zones while changing the first zone. A controller adjustment system characterized in that the setting of the operation amount is canceled for the first zone for which the calculation of the strength of interference has been completed. A heating device consisting of an electric heating unit having a heating unit in each of a plurality of zones for heating the work and a controller for controlling the electric heating unit for each zone, or a cooling unit in each of the plurality of zones for cooling the work. For a cooling device consisting of an electric heating unit provided and a controller that controls this electric heating unit for each zone, all with the temperature sensor fixed for each zone on the surface of the work when adjusting the offset of the controller. A target value setting unit configured to instruct the controller to set the target value of the zone to the same value, and
An operation amount setting unit configured to set the operation amount output by the controller, and an operation amount setting unit.
From the second value after the operation amount of one first zone is changed to a second value larger than the first value while the operation amount of each zone is set to the first value. When the operation amount of each zone is changed to the third value, which is also smaller, or when the operation amount of each zone is set to the first value, the operation amount of one first zone is smaller than the first value. The peak of the measured value of the temperature sensor at the position corresponding to the second zone other than the first zone when the value is changed to the fifth value larger than the fourth value after being changed to the value of. The intensity of interference that the first zone gives to the second zone is determined by the width of the first zone and the width of the peak of the measured value of the temperature sensor at the position corresponding to the first zone. An interference strength measuring unit configured to calculate for each first zone and each second zone while changing zones, and
The process of calculating the offset of the target zone based on the measured value at the time of setting of the temperature sensor at the position corresponding to the target zone of the offset adjustment and the target value is performed in order from the zone having the highest interference strength. An offset calculator configured to do for the zone,
An offset setting unit configured to instruct the controller to add an offset calculated by the offset calculation unit to the control amount of the target zone.
The offset calculation unit and the determination unit configured to repeatedly execute the processing of the offset setting unit are provided until a predetermined offset adjustment end condition is satisfied.
The operation amount setting unit instructs the controller to set the operation amount of all the zones to the first value, and then sets the operation amount of the first zone to the second value, and then sets the operation amount to the second value. Instructing the controller to set the third value or to set the fourth value and then set the fifth value is performed for all the zones while changing the first zone. A controller adjustment system characterized in that the setting of the operation amount is canceled for the first zone for which the calculation of the strength of interference has been completed. In the controller adjustment system according to claim 1,
The interference strength measuring unit sets the operation amount output from the controller at the time of setting the temperature control for the second zone after the application of the temporary offset to Aij, and controls the temperature for the second zone before the application of the temporary offset. When the operation amount output from the controller is Bij and the temporary offset is S at the time of setting, the strength of interference given by the first zone to the second zone is determined by | (Aij-Bij) / S |. A controller adjustment system characterized by calculating. In the controller adjustment system according to claim 2,
The interference strength measuring unit sets the manipulated variable of each zone to the third value after the manipulated variable of the first zone is changed to the second value while the manipulated variable of each zone is set to the first value. When changed, or when the operation amount of each zone is set to the first value, the operation amount of the first zone is changed to the fourth value and then changed to the fifth value. When the width of the peak of the control amount of the second zone is Pij and the width of the peak of the control amount of the first zone is Pii, the first zone gives to the second zone. A controller adjustment system characterized in that the intensity of interference is calculated by Pij / Pii. In the controller adjustment system according to claim 3,
The interference strength measuring unit sets the manipulated variable of each zone to the third value after the manipulated variable of the first zone is changed to the second value while the manipulated variable of each zone is set to the first value. When changed, or when the operation amount of each zone is set to the first value, the operation amount of the first zone is changed to the fourth value and then changed to the fifth value. The width of the peak of the measured value of the temperature sensor at the position corresponding to the second zone is Pij, and the width of the peak of the measured value of the temperature sensor at the position corresponding to the first zone is Pij. A controller adjustment system characterized in that the intensity of interference given by the first zone to the second zone is calculated by Pij / Pii when Pij is used. In the controller adjustment system according to any one of claims 1 to 6.
The offset calculation unit is characterized in that when the offset is adjusted a plurality of times for each zone, the offset to be further added to the control amount of the target zone is calculated while maintaining all the offsets up to the immediately preceding adjustment. Controller adjustment system. In the controller adjustment system according to any one of claims 1 to 7.
The determination unit determines that the offset adjustment end condition is satisfied when the difference between the measured values at the time of setting of the temperature sensor after the offset adjustment is performed for each zone is within a predetermined range. Characterized controller adjustment system. In the controller adjustment system according to any one of claims 1 to 7.
The controller adjustment system is characterized in that the determination unit determines that the offset adjustment end condition is satisfied when the number of executions of the offset adjustment in each zone reaches a predetermined number of times. In the controller adjustment system according to claim 1,
When the temporary offset is applied to all the zones in order, the temporary offset setting unit sets a plurality of pre-registered zones as the first zone at the same time.
When the offset calculation unit calculates the offset in order from the zone having the highest interference strength, the offset calculation unit calculates the offset for each of the target zones by simultaneously setting the plurality of registered zones as the target zones.
The controller adjustment system is characterized in that the offset setting unit instructs the controller to simultaneously add a corresponding offset calculated by the offset calculation unit to the control amounts of the registered plurality of zones. .. In the controller adjustment system according to claim 2 or 3.
When setting the operation amount in order for all the zones, the operation amount setting unit sets a plurality of pre-registered zones as the first zone at the same time.
When the offset calculation unit calculates the offset in order from the zone having the highest interference strength, the offset calculation unit calculates the offset for each of the target zones by simultaneously setting the plurality of registered zones as the target zones.
The controller adjustment system is characterized in that the offset setting unit instructs the controller to simultaneously add a corresponding offset calculated by the offset calculation unit to the control amounts of the registered plurality of zones. .. In the controller adjustment system according to claim 1,
The target value setting unit, the temporary offset setting unit, the interference strength measuring unit, the offset calculation unit, the offset setting unit, and the determination unit process each of the plurality of registered target values.
A storage unit configured to store the offset for each zone and each target value,
Based on the offset stored in this storage unit, the offset is calculated for each zone by linear interpolation for the target value for which offset adjustment has not been performed, and the interpolation unit configured to be stored in the storage unit is further added. Prepare,
The offset setting unit acquires an offset corresponding to a target value of the same value as the control amount of each zone from the storage unit and sets it in the controller during the actual operation of the heating device or the cooling device. A controller adjustment system characterized by doing things for each zone. In the controller adjustment system according to claim 2 or 3.
The target value setting unit, the operation amount setting unit, the interference strength measuring unit, the offset calculation unit, the offset setting unit, and the determination unit process each of the plurality of registered target values.
A storage unit configured to store the offset for each zone and each target value,
Based on the offset stored in this storage unit, the offset is calculated for each zone by linear interpolation for the target value for which offset adjustment has not been performed, and the interpolation unit configured to be stored in the storage unit is further added. Prepare,
The offset setting unit acquires an offset corresponding to a target value of the same value as the control amount of each zone from the storage unit and sets it in the controller during the actual operation of the heating device or the cooling device. A controller adjustment system characterized by doing things for each zone. A heating device consisting of an electric heating unit having a heating unit in each of a plurality of zones for heating the work and a controller for controlling the electric heating unit for each zone, or a cooling unit in each of the plurality of zones for cooling the work. For a cooling device consisting of an electric heating unit provided and a controller that controls this electric heating unit for each zone, all with the temperature sensor fixed for each zone on the surface of the work when adjusting the offset of the controller. The first step of instructing the controller to make the target values of the zones of the same value, and
A second process of instructing the controller to add a predetermined temporary offset to the control amount of one first zone in each zone is performed for all zones while changing the first zone. Steps and
The manipulated variable output from the controller when the temperature control is set for the second zone other than the first zone after the application of the temporary offset, and the temperature control for the second zone before the temporary offset is applied. A third step of calculating the strength of interference that the first zone gives to the second zone for each of the first zone and each second zone, sometimes based on the amount of operation output from the controller. ,
The process of calculating the offset of the target zone based on the measured value at the time of setting of the temperature sensor at the position corresponding to the target zone of the offset adjustment and the target value is performed in order from the zone having the highest interference strength. The fourth step for the zone and
A fifth step instructing the controller to add the offset calculated in the fourth step to the control amount of the target zone.
A controller adjustment method comprising a sixth step of repeatedly executing the process of the fourth step and the fifth step until a predetermined offset adjustment end condition is satisfied. A heating device consisting of an electric heating unit having a heating unit in each of a plurality of zones for heating the work and a controller for controlling the electric heating unit for each zone, or a cooling unit in each of the plurality of zones for cooling the work. For a cooling device consisting of an electric heating unit provided and a controller that controls this electric heating unit for each zone, all with the temperature sensor fixed for each zone on the surface of the work when adjusting the offset of the controller. The first step of instructing the controller to make the target values of the zones of the same value, and
The second step of setting the operation amount output by the controller and
From the second value after the operation amount of one first zone is changed to a second value larger than the first value while the operation amount of each zone is set to the first value. When the third value is changed to a smaller value, or when the operation amount of each zone is set to the first value, the operation amount of one first zone is smaller than the first value. The width of the peak of the control amount of the second zone other than the first zone and the width of the control amount of the first zone when the value is changed to the fifth value larger than the fourth value after being changed to the value of Based on the width of the peak of the controlled variable, the intensity of interference given by the first zone to the second zone is calculated for each first zone and each second zone while changing the first zone. The third step and
The process of calculating the offset of the target zone based on the measured value at the time of setting of the temperature sensor at the position corresponding to the target zone of the offset adjustment and the target value is performed in order from the zone having the highest interference strength. The fourth step for the zone and
A fifth step instructing the controller to add the offset calculated in the fourth step to the control amount of the target zone.
The fourth step and the sixth step of repeatedly executing the processing of the fifth step until a predetermined offset adjustment end condition is satisfied are included.
The second step is
A step of instructing the controller to set the manipulated variable of all zones to the first value, and
Instruct the controller to set the manipulated variable of the first zone to the second value and then to the third value, or to set the fourth value and then to the fifth value. The steps to be taken for all zones while changing the first zone,
A controller adjusting method including a step of canceling the setting of the operation amount for the first zone for which the calculation of the interference intensity has been completed. A heating device consisting of an electric heating unit having a heating unit in each of a plurality of zones for heating the work and a controller for controlling the electric heating unit for each zone, or a cooling unit in each of the plurality of zones for cooling the work. For a cooling device consisting of an electric heating unit provided and a controller that controls this electric heating unit for each zone, all with the temperature sensor fixed for each zone on the surface of the work when adjusting the offset of the controller. The first step of instructing the controller to make the target values of the zones of the same value, and
The second step of setting the operation amount output by the controller and
From the second value after the operation amount of one first zone is changed to a second value larger than the first value while the operation amount of each zone is set to the first value. When the operation amount of each zone is changed to the third value, which is also smaller, or when the operation amount of each zone is set to the first value, the operation amount of one first zone is smaller than the first value. The peak of the measured value of the temperature sensor at the position corresponding to the second zone other than the first zone when the value is changed to the fifth value larger than the fourth value after being changed to the value of. The intensity of interference that the first zone gives to the second zone is determined by the width of the first zone and the width of the peak of the measured value of the temperature sensor at the position corresponding to the first zone. The third step of calculating for each first zone and each second zone while changing the zone, and
The process of calculating the offset of the target zone based on the measured value at the time of setting of the temperature sensor at the position corresponding to the target zone of the offset adjustment and the target value is performed in order from the zone having the highest interference strength. The fourth step for the zone and
A fifth step instructing the controller to add the offset calculated in the fourth step to the control amount of the target zone.
The fourth step and the sixth step of repeatedly executing the processing of the fifth step until a predetermined offset adjustment end condition is satisfied are included.
The second step is
A step of instructing the controller to set the manipulated variable of all zones to the first value, and
Instruct the controller to set the manipulated variable of the first zone to the second value and then to the third value, or to set the fourth value and then to the fifth value. The steps to be taken for all zones while changing the first zone,
A controller adjusting method including a step of canceling the setting of the operation amount for the first zone for which the calculation of the interference intensity has been completed.

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